containers - C# Casting of Dictionary -

i have function:

void writemap(object value)   {       idictionary<string, object> vv = (idictionary<string, object>)value;       foreach (keyvaluepair<string, object> obj in vv)       {           (write key)           (write value)       }   }   

it works if value of type idictionary<string, object>, like:
idictionary<string, int> idictionary<string, myclass> idictionary<string, string[]> etc.

the cast throws run-time exception. function not modify container, prints keys , values. ideas on how can make work? appreciated.

thanks!

add generic type parameter method corresponding type of values in dictionary:

void writemap<t>(idictionary<string, t> dict) {     foreach (keyvaluepair<string, t> in dict)     {         // write key         // write value     } } 

this has advantage of eliminating cast. if need pass dictionary in object reason, cast idictionary.